Joseph b



J. B.'ADLER.

(No Model.)

NAIL.

Patented Mar. '7, 1893.

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Wlnesses %m @405? UNITED STATES PATENT OFFICE.

JOSEPH B. ADLER, OF NEW YORK, N. Y.

NAIL.

SPECIFICATION forming part of Letters Patent No. 493,144, dated March 7,1893.

Application filed June 11, 1892- Serial No. 436,342. (No model.

To all whom it may concern:

Be it known that I, JosEPH B. ADLER, a citizen of the United States,residing in the city of New York, in the county and State of New York,have invented a certain new and useful Improvement in Nails, of whichthe following is a specification.

My invention relates to improvements in nails especially for use in hardwoods.

The object of my invention is to provide a nail which can be easilydriten, and when driven in will not only be more secure, but also moreditficult to extract than the ordinary nail; also to provide a nailwhich by reason of its form the liability of mistake in driving with,instead of across the grain is obviated.

In the drawings Figure 1 is a side elevation of myimproved nail. Fig. 3is a similar view of a modification of the same. Figs. 2 and 4 aretransverse sections of Figs. 1 and 3 at line 00 0a.

In the drawings similar letters of reference designate correspondingparts in all figures.

A designates a nail made of any suitable material having the lowerportion B of its shank laterally extended in the form of a Wedge towardthe point of the nail. The sides of this portion B of the nail soextended are beveled as shown by 0 thus forming a cutting edge for thenail when driven.

O designates incuts in the shank of the nail above the wedge shapedportion B.

With a nail constructed in this mannerthe liability of mistake indriving the nail with, instead of across the grain of the wood isobviated by reason of the form of the wedge shaped cutting edge of thelower portion B; in addition it will be seen that while in driving thenail the wedge shaped lower portion cuts through the wood yet by reasonof the fact that the lower portion of the nail is provided with a wedgeshape cutting edge a path is prepared for the upper part of the shank ofthe nail to enter, thus preventing the splitting of' the wood and makingit easier to insert the nail.

The shoulders e of the wedge shape point and the incuts O on the shankabove the portion B render it more diflicult to extract the nail whendriven because of the fiber of the wood swelling and filling around theshoulders eand in the incuts 0, especially in view of the fact thatanail almost invariably turns when driven in.

Instead of beveling the edges of the portion B of the shank, theextended wedge shaped portion may be made oval as shown at o in Fig. 3,and instead of incuts the shank may be provided with a series ofgroovesi extending around the same beneath the head of the nail.

Railroad or other spikes made according to the principle of my inventionwill be iound more desirable than those in present use for the reasonthat by my construction the spike is given a more secure hold and isless liable to become loosened after being driven,especially in hardwood.

What I claim as new, and desire to secure by Letters Patent, is:-

1. As a new article of manufacture, a nail having thelower portionof itsshank enlarged laterally, forming a section having upper flat lateralshoulders, e, from which shoulders said enlargement tapers downwardly toa common point each side of the enlarged portion being wedge shaped in.cross section, substantially as described.

2. As a new article of manufacture the herein described nail havingthelower portion B of its shank extended laterally in wedge shape andprovided with tapering cutting edges 0. shoulders e and a series ofincuts C in the shank between the head of the nail and the shoulders eof the wedge shaped portion, substantially as shown and described.

J OS. B. ADLER.

Witnesses:

S. RANDALL, HENRY McOLosKEY.

